Vectron’s VCC6 Crystal Oscillator is a quartz stabilized, differential output oscillator, operating off either a 2.5 or 3.3 volt supply,
hermetically sealed 5x7 ceramic package.
Features
•
•
•
•
•
•
•
Ultra Low Jitter Performance, Fundamental or 3rd OT Crystal Design
Output Frequencies to 275.000MHz
0.3 ps typical RMS jitter, 12k-20MHz
Differential Output
Enable/Disable
-10/70°C, -40/85°C or -55/125°C Operation
Hermetically Sealed 5x7 Ceramic Package
•
•
•
•
•
•
•
•
•
•
Applications
Ethernet, GbE, Synchronous Ethernet
Fiber Channel
Enterprise Servers
Telecom
Clock source for A/D’s, D/A’s
Driving FPGA’s
Test and Measurement
PON
Medical
COTS
• Product is compliant to RoHS directive
and fully compatible with lead free assembly
Block Diagram
Complementary
Output
Output
V
DD
Crystal
Oscillator
E/D or NC
E/D or NC
Gnd
Page1
Performance Specifications
Table 1. Electrical Performance, LVPECL Option
Parameter
Voltage
1
Current (No Load)
Nominal Frequency
2
Stability
2,3
(Ordering Option)
Outputs
Output Logic Levels
4
, -10/70°C
Output Logic High
Output Logic Low
Output Logic Levels
4
, -40/85°C
Output Logic High
Output Logic Low
Output Rise and Fall Time
4
Load
Duty Cycle
5
Jitter (12 kHz - 20 MHz BW)155.52MHz
6
Period Jitter
7
RMS
P/P
Random Jitter
Deterministic Jitter
Output Enabled
8
Output Disabled
Disable Time
Enable/Disable Leakage Current
Enable Pull-Up Resistor
Output Enabled
Output Disabled
Start-Up Time
Operating Temp. (Ordering Option)
t
SU
T
OP
-10/70, -40/85 or -55/125
33
1
10
фJ
фJ
2.3
20
2.4
0
Enable/Disable
V
IH
V
IL
t
D
0.7*V
DD
0.3*V
DD
200
±200
V
V
ns
uA
KOhm
MOhm
ms
°C
ps
ps
ps
ps
45
V
OH
V
OL
V
OH
V
OL
t
R
/t
F
50 ohms into V
DD
-1.3V
50
0.3
55
0.7
%
ps
V
DD
-1.025
V
DD
-1.810
V
DD
-1.085
V
DD
-1.830
V
DD
-0.880
V
DD
-1.620
V
DD
-0.880
V
DD
-1.555
600
V
V
V
V
ps
Symbol
V
DD
I
DD
Min
Supply
3.135
2.375
Frequency
Typical
3.3
2.5
50
Maximum
3.465
2.625
98
275.000
Units
V
V
mA
MHz
ppm
f
N
25
±20, ±25, ±50, ±100
1. The VCC6 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor.
2. See Standard Frequencies and Ordering Information for more information.
3. Includes calibration tolerance, operating temperature, supply voltage variations, aging and IR reflow.
4. Figure 1 defines the test circuit and Figure 2 defines these parameters.
5. Duty Cycle is defined as the On/Time Period.
6. Measured using an Agilent E5052, 155.520MHz. Please see “Typical Phase Noise and Jitter Report for the VCC6 series”.
7. Measured using a Wavecrest SIA3300C, 90K samples.
8. Outputs will be Enabled if Enable/Disable is left open.
V
DD
-1.3V
t
R
V
OH
50%
t
F
1
NC
2
NC
3
6
5
4
50
50
V
OL
On Time
-1.3V
Period
Figure 1.
Page2
Figure 2.
Performance Specifications
Table 2. Electrical Performance, LVDS Option
Parameter
Voltage
1
Current (No Load)
Nominal Frequency
2
Stability
2,3,
(Ordering Option)
Outputs
Output Logic Levels
4
Output Logic High
Output Logic Low
Differential Output Amplitude
Differential Output Error
Offset Voltage
Offset Voltage Error
Output Leakage Current
Output Rise and Fall Time
4
Load
Duty Cycle
5
Jitter (12 kHz - 20 MHz BW)155.52MHz
6
Period Jitter
7
RMS
P/P
Random Jitter
Deterministic Jitter
Output Enabled
8
Output Disabled
Disable Time
Enable/Disable Leakage Current
Enable Pull-Up Resistor
Output Enabled
Output Disabled
Start-Up Time
Operating Temp. (Ordering Option)
t
SU
T
OP
-10/70, -40/85 or -55/125
33
1
10
фJ
фJ
2.5
22
2.6
0
Enable/Disable
V
IH
V
IL
t
D
0.7*V
DD
0.3*V
DD
200
±200
V
V
ns
uA
KOhm
MOhm
ms
°C
ps
ps
ps
ps
45
t
R
/t
F
100 ohms differential
50
0.3
55
0.7
%
ps
1.125
1.25
V
OH
V
OL
1.43
1.10
330
1.6
454
50
1.375
50
10
600
V
V
mV
mV
V
mV
uA
ps
Symbol
V
DD
I
DD
Min
Supply
3.135
2.375
Frequency
Typical
3.3
2.5
Maximum
3.465
2.625
60
Units
V
V
mA
MHz
ppm
f
N
80
±20, ±25, ±50, ±100
275.000
0.9
247
1. The VCC6 power supply pin should be filtered, eg, a 0.1 and 0.01uf capacitor.
2. See Standard Frequencies and Ordering Information for more information.
3. Includes calibration tolerance, operating temperature, supply voltage variations, aging and IR reflow.
4. Figure 2 defines these parameters and Figure 3 defines the test circuit.
5. Duty Cycle is defined as the On/Time Period.
6. Measured using an Agilent E5052, 155.520MHz. Please see “Typical Phase Noise and Jitter Report for the VCC6 series”.
7. Measured using a Wavecrest SIA3300C, 90K samples.
8. Outputs will be Enabled if Enable/Disable is left open.
50
50
Out
Out
0.01 uF
DC
6
1
5
2
4
3
Figure 3.
Page3
Package and Pinout
Table 3. Pinout
Pin #
1
2
3
4
5
6
Symbol
E/D or NC
E/D or NC
GND
f
O
Cf
O
V
DD
Function
Enable Disable or No Connection
Enable Disable or No Connection
Electrical and Lid Ground
Output Frequency
Complementary Output Frequency
Supply Voltage
Table 4. Enable Disable Function
(optional on pin 1 or pin2)
E/D Pin
High
Open
Low
Output
Clock Output
Clock Output
High Impedance
6
7.0±0.15
5
VCC6-XXX
XXXMXX
YYWW C
4
1.96
5.0±0.15
1
2
1.397
3
1.6 max
1.27
Marking
XXXMXXX = frequency
YY= Year
WW = Week
C = Country Code
Dimensions are in mm
2.54
1.78
3.66
1
6
2
Bottom View
5
3
3.57
4
2.54
5.08
5.08
Figure 4. Package Outline Drawing
Figure 5. Pad Layout
LVPECL Application Diagrams
140Ω
140Ω
Figure 6. Standard PECL Output Configuration Figure 7. Single Resistor Termination Scheme
Resistor values are typically 140 ohms for 3.3V
operation and 84 ohms for 2.5V operation.
Figure 8. Pull-Up Pull Down Termination
Resistor values are typically for 3.3V operation
For 2.5V operation, the resistor to ground is 62
ohms and the resistor to supply is 240 ohms
The VCC6 incorporates a standard PECL output scheme, which are un-terminated emitters as shown in Figure 6. There are numerous application notes on
terminating and interfacing PECL logic and the two most common methods are a single resistor to ground, Figure 7, and a pull-up/pull-down scheme as
shown in Figure 8. An AC coupling capacitor is optional, depending on the application and the input logic requirements of the next stage.
Page4
LVDS Application Diagrams
V
CC
LVDS
Driver
100
LVDS
Receiver
LVDS
Driver
100
Receiver
OUT+
OUT-
Figure 9. Standard LVDS
Output Configuration
Figure 10. LVDS to LVDS Connection, Internal 100ohm
Figure 11. LVDS to LVDS Connection
Some LVDS structures have an internal 100 ohm resistor
External 100ohm and AC blocking caps
on the input and do not need additional components.
Some input structures may not have an internal 100 ohm
resistor on the input and will need an external 100ohm
resistor for impedance matching. Also, the input may have
an internal DC bias which may not be compatible with
LVDS levels, AC blocking capacitors can be used.
One of the most important considerations is terminating the Output and Complementary Outputs equally. An unused output should not be left un-termi-
nated, and if one of the two outputs is left open it will result in excessive jitter on both. PC board layout must take this and 50 ohm impedance matching
into account. Load matching and power supply noise are the main contributors to jitter related problems.
Environmental and IR Compliance
Table 5. Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Temperature Cycle
Solderability
Fine and Gross Leak
Resistance to Solvents
Moisture Sensitivity Level
Contact Pads
ThetaJC (bottom of package)
Weight
Condition
MIL-STD-883 Method 2002
MIL-STD-883 Method 2007
MIL-STD-883 Method 1010
MIL-STD-883 Method 2003
MIL-STD-883 Method 1014
MIL-STD-883 Method 2015
MSL1
Gold (0.3 um min - 1.0 um max) over Nickel
13 C/W
170 mg
IR Compliance
S
Suggested IR Profile
Devices are built using lead free epoxy and can be subjected to
standard lead free IR refl
ow conditions shown in Table 5. Contact
pads are gold over nickel and lower maximum temperatures can also
Hello, I have the same problem now. I use 2440. I originally planned to use timer0 or timer1 to make a timing. I created a thread in the display driver and dynamically allocated and mapped a sysintr. ...
I found that many people know what to use to read e-books after downloading them, so I uploaded this PDG reading software, hoping that everyone can use it....
TI has launched the TCP/IP NDK (Network Developer's Kit) development kit in conjunction with the C6000 chip. Its main components include: (1) Program libraries supporting the TCP/IP protocol stack. Th...
Moderator, I have always been troubled by analog power supply accuracy and battery power loss. Can it be solved like this: connect VDDA and VDD, and use an independent power supply system for Vref? Ca...
[url=][size=4][b]AM335X chip MUX configuration analysis under Linux[/b][/size][/url][size=4][b](Reprinted from [/b][/size][url=http://blog.chinaunix.net/uid-20543672-id-3067021.html][size=4][b]http://...
Hello everyone, I am a newcomer, but I would like to use this forum to find a mentor in embedded development. Please understand and support me. I am currently a software testing engineer, mainly engag...
Today's computer peripherals are pursuing high speed and high versatility. In order to meet user needs, seven companies led by Intel launched the USB (Universal Serial Bus) bus protocol in 1994, wh...[Details]
introduction
With the continuous optimization of surface mount technology (SMT) and the rapid development of chip component manufacturing technology, the application of chip mounters in the el...[Details]
With the rapid development of science and technology, especially the widespread application of digital technology and various ultra-large-scale integrated circuits, electronic equipment, especially...[Details]
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
1. Introduction
Automobile pollution is one of the most important issues that people are most concerned about and need to solve urgently. As an important method for detecting automobile exhau...[Details]
Microcontrollers (MCUs), which are widely used in automotive electronics, are rapidly facing time and cost pressures. The main advantage of using MCUs has always been to create high-level system in...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
With the continuous improvement of the requirements of intelligent building security systems and the continuous improvement of people's safety awareness, indoor anti-theft has gradually attracted peop...[Details]
The solidification and modularization of intelligent video analysis algorithms are the current trends in the application of intelligent video analysis technology. It perfectly combines intelligent ...[Details]
1. Principle of displacement angle sensor
The angle sensor is used to detect angles. It has a hole in its body that fits the LEGO axle. When connected to the RCX, the angle sensor counts once ...[Details]
5. Identifiers and keywords of C language
A complete PIC microcontroller C language program usually consists of six parts: include files (i.e. header files 1, variable definitions, variable de...[Details]
As a simple and practical input device, buttons have been used in various microcontroller application systems and are ubiquitous. However, the buttons used in different practical occasions are also...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
introduction
MAX6636 is a multi-channel precision temperature monitor that can not only monitor local temperature, but also connect up to 6 diodes externally. Each channel has a programmable...[Details]
Abstract: In recent years, with the establishment and grid-connected power generation of a large number of solar photovoltaic power stations at home and abroad, photovoltaic grid-connected inverter...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
